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In radiology, honeycombing or "honeycomb lung" is the radiological appearance seen with widespread pulmonary fibrosis[1] and is defined by the presence of small cystic spaces with irregularly thickened walls composed of fibrous tissue. Dilated and thickened terminal and respiratory bronchioles produce cystic airspaces, giving a honeycomb appearance on chest x-rays. Honeycomb cysts often predominate in the peripheral and pleural/subpleural lung regions regardless of their cause.
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Subpleural honeycomb cysts typically occur in several contiguous layers. This finding can allow honeycombing to be distinguished from paraseptal emphysema in which subpleural cysts usually occur in a single layer.
References
edit- ^ Umphress, Brandon A.; Yeldandi, Anjana V.; Fishbein, Michael C. (20 September 2017). Cagle, Philip T. (ed.). "Honeycomb Lung Pathology: Definition, Epidemiology, Etiology". Medscape. Retrieved 9 February 2024.